513155263 has 2 divisors, whose sum is σ = 513155264. Its totient is φ = 513155262.

The previous prime is 513155233. The next prime is 513155267. The reversal of 513155263 is 362551315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 513155263 - 2¹³ = 513147071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513155267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256577631 + 256577632.

It is an arithmetic number, because the mean of its divisors is an integer number (256577632).

Almost surely, 2^513155263 is an apocalyptic number.

513155263 is a deficient number, since it is larger than the sum of its proper divisors (1).

513155263 is an equidigital number, since it uses as much as digits as its factorization.

513155263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13500, while the sum is 31.

The square root of 513155263 is about 22652.9305609672. The cubic root of 513155263 is about 800.6012474928.

The spelling of 513155263 in words is "five hundred thirteen million, one hundred fifty-five thousand, two hundred sixty-three".